Check Message and Checkmate ends the game

src/backend/Board.java

@@ -12,6 +12,10 @@ private int width;
 private int height;
 private ArrayList<Piece> Pieces;
 private Stack<Move> moveHistory = new Stack<>();
+private boolean gameOver = false;
+private String winnerText = null;
+public boolean isGameOver() { return gameOver; }
+public String getWinnerText() { return winnerText; }
 
 // ── NEW FIELDS FOR userTouch ───────────────────────────────────────
 private boolean hasSelection = false;   // did we already click to pick up a piece?
@@ -315,26 +319,52 @@ public void userTouch(int x, int y) {
         turnWhite = !turnWhite;
         hasSelection = false;
         System.out.println(this);
-     // 🧠 CHECK & CHECKMATE logic
+
+        // Reset previous check flags
         checkedKingX = -1;
         checkedKingY = -1;
-        checkmateFlag = false;
 
-        boolean opponentInCheck = isInCheck(turnWhite);
-        if (opponentInCheck) {
+        // 🧠 CHECK detection
+        boolean opponentColor = !turnWhite;
+        if (isInCheck(opponentColor)) {
+            Piece king = getKing(opponentColor);
+            if (king != null) {
+                checkedKingX = king.getX();
+                checkedKingY = king.getY();
+                System.out.println("⚠️ " + (opponentColor ? "White" : "Black") + " king is in CHECK!");
+            }
+        } else {
+            checkedKingX = -1;
+            checkedKingY = -1;
+        }
+        if (isInCheck(turnWhite)) {
             Piece king = getKing(turnWhite);
             if (king != null) {
                 checkedKingX = king.getX();
                 checkedKingY = king.getY();
-                System.out.println("⚠️ " + (turnWhite ? "White" : "Black") + " king is in check!");
+                System.out.println("⚠️ " + (turnWhite ? "White" : "Black") + " king is in CHECK!");
             }
         }
 
-        if (isCheckmate(turnWhite)) {
+        // ♟️ CHECKMATE detection
+        if (captured != null && captured.getType() == PieceType.King) {
+            winnerText = (captured.isWhite() ? "Black" : "White") + " wins by king capture!";
+            gameOver = true;
+            System.out.println("♟️ " + winnerText);
+            return;
+        }if (isCheckmate(turnWhite)) {
             checkmateFlag = true;
-            System.out.println("♟️ " + (!turnWhite ? "White" : "Black") + " wins by checkmate!");
+            winnerText = (!turnWhite ? "White" : "Black") + " wins by checkmate!";
+            gameOver = true;
+            System.out.println("♟️ " + winnerText);
+            return;
         }
 
+else {
+            checkmateFlag = false;
+        }
+
+
     }
 }
 
@@ -736,11 +766,45 @@ public boolean isCheckmate(boolean white) {
     }
     return true;
 }
-public Piece getKing(boolean white) {
+public Piece getKing(boolean isWhite) {
     for (Piece p : Pieces) {
-        if (p.getType() == PieceType.King && p.isWhite() == white) return p;
+        if (p.getType() == PieceType.King && p.isWhite() == isWhite) {
+            return p;
+        }
     }
     return null;
 }
+public boolean isGameOver() {
+    // Checkmate
+    if (isCheckmate(true) || isCheckmate(false)) return true;
 
+    // King capture
+    boolean whiteKingAlive = false;
+    boolean blackKingAlive = false;
+    for (Piece p : Pieces) {
+        if (p.getType() == PieceType.King) {
+            if (p.isWhite()) whiteKingAlive = true;
+            else blackKingAlive = true;
+        }
+    }
+    return !(whiteKingAlive && blackKingAlive); // game over if any king is missing
+}
+
+public String getWinnerText() {
+    boolean whiteKingAlive = false;
+    boolean blackKingAlive = false;
+    for (Piece p : Pieces) {
+        if (p.getType() == PieceType.King) {
+            if (p.isWhite()) whiteKingAlive = true;
+            else blackKingAlive = true;
+        }
+    }
+    if (!whiteKingAlive && !blackKingAlive) return "Both Kings Captured!";
+    if (!whiteKingAlive) return "Black Wins!";
+    if (!blackKingAlive) return "White Wins!";
+    if (isCheckmate(true)) return "Black Wins by Checkmate!";
+    if (isCheckmate(false)) return "White Wins by Checkmate!";
+    return "";
+}
+//hi
 }

src/backend/Game.java

@@ -41,6 +41,10 @@ public class Game extends Thread {
 
 	public void run() {
 		while(true) {
+			if (board.isGameOver()) {
+	            mjf.update(board.getTurnNumber(), board.isTurnWhite()); // update GUI one last time
+	            break; // 💣 exit game loop
+			}
 			aiPlayerTurn();
 			mjf.update(board.getTurnNumber(), board.isTurnWhite());
 			try {
@@ -56,12 +60,14 @@ public class Game extends Thread {
 	}
 
 	private void aiPlayerTurn() {
+		 if (board.isGameOver()) return;
 		if(isAITurn()) {
 			board.playMove(aiPlayer.computeBestMove(new Board(board)));
 		}
 	}
 
 	public void clickCoords(int x, int y) {
+		 if (board.isGameOver()) return;
 		int width = this.getWidth();
 		int height = this.getHeight();
 		if(0>x || 0>y || x>width || y>height) {

src/windowInterface/MyInterface.java

@@ -257,7 +257,12 @@ public class MyInterface extends JFrame {
 	}
 	
 	public void update(int turnCount, boolean turnIsWhite) {
-		turnLabel.setText("Turn : "+turnCount+", "+ (turnIsWhite?"White":"Black"));
+		 if (game.getBoard().isGameOver()) {
+		        actionLabel.setText(game.getBoard().getWinnerText()); // 🏁 Show who won
+		        turnLabel.setText("Game Over");
+		    } else {
+		    	turnLabel.setText("Turn : "+turnCount+", "+ (turnIsWhite?"White":"Black"));
+		    }
 		actionLabel.setText(panelDraw.isPieceAdderMode()?"Adding Piece":
 			(panelDraw.isPieceSelectorMode()?"Selecting Piece to Add":
 				"Playing"));